Improvement in bakers ovens



J. H. vANcE & F. B. HALL.

Bakers Oven.

N0. 131,315. Patented Sep. I0, 1872,. i

Xml/M TATES n'rnN'r FICE.

JOSEPH H. VANOE AND FREDERICK B. HALL, OF ANN ARBOR, MICHIGAN.

IMPROVEMENT iN BAKERS OVENS.

Specification forming part of Lettere Patent No. lhli, dated September 10, 1872.

SPECIFICATION.

To all whom it may conce/ra:

Be it known that we, JOSEPH H. VANGE and FREDERCK B. HALL, of the city of Ann Arbor, county of -\Vasht`enaw and State of Michigan, have invented a new and Improved Bakers Oven, of which the following` is a full and exact description, reference being had to the annexed drawing as forming a part of the specification.

The main feature of our invention consists in a central heater in combination with the means for carrying the heat to the outer parts of the interior space, thus securing a more or less even distribution of the heat over the floor on which the baking is done.

t t t is the shell of the oven, the inner spaceV of which is cylindrical, and in which the baking-door h 71. may be made to revolve by any of the well-known means. The furnace B, in which the fuel is burned, is placed in the center of the interior space of the oven. The feed-pipe a a is placed vertically over the furnace B, so that when fuel is passed :into the door 1', which is above the oven, it will fall nto the furnace. The smoke-stack c c surrounds the feed-pipe. This arrangement is essentially the same as that of the well-known base-burn- 4 ing or self-feeding stoves. The floor l1. h c e of between floors and the inner wall g g g of the oven. These spaces are divided into several passages by the partitions f f f, so that the heat from the central furnace is compelled to pass horizontally outward along the passages thus formed to the annular spaces before mentioned; thence vertically upward a short distance;

thence into the space over the baking-oor h h; thence through openings 7c k into the smokestack c c. The course ofthe heat thus described is shown by the several arrows m m m.

The heat is prevented from escaping from the oven by closing the opening` 7c k by means of the damper x x, and the draft of the furnace is regulated by the damper y. When it is open the heat passes directly up the smokestack, and when it :is closed it is forced into the passages g g, as before described.

The door c gives access to the interior of the oven, and the passage o o gives access to the lower part of the furnace.

What we cla-im as our invention is l. A cylindrical baking-oven with a central heating-furnace, as and for the purposes described.

2. The combination of a central heating-furnace, B,with the air-passages g g g, as and for the purposes described.

JOSEPH H. VANUE. FREDERICK B. HALL.

Witnesses:

F. C. GoNNELL, G. B. SHWAB. 

